diff --git a/src/cc65/datatype.h b/src/cc65/datatype.h
index 39e7338ab..f42faa89c 100644
--- a/src/cc65/datatype.h
+++ b/src/cc65/datatype.h
@@ -135,9 +135,6 @@ enum {
 
 
 
-/* Forward for a symbol entry */
-struct SymEntry;
-
 /* Type entry */
 typedef unsigned short type;